A U.S. Air Force version of the F-35 Lightning II flies at Naval Air Station Fort Worth Joint Reserve Base, Texas, in this April 20, 2010, file photo. Police were responding Friday to reports of a possible murder-suicide at Lackland Air Force Base in San Antonio. Photo: Reuters

UPDATE: 2:35 p.m. EDT — Texas Sen. Ted Cruz released a statement regarding the apparent murder-suicide at Lackland Air Force Base in San Antonio on Friday that left two people dead. Cruz was campaigning in New York City for the April 19 New York Republican presidential primary when the shooting occurred.

UPDATE: 1:55 p.m. EDT — An anonymous senior U.S. official told the Boston Globe that the shooter in an apparent murder-suicide at Lackland Air Force Base in San Antonio on Friday morning was an airman who killed his commanding officer. Early reports said that one of the victims in the shooting was the commanding officer of the 331st K-9 Training Squadron, but military officials later refuted those details, stating they could not yet confirm the identity or military unit of the victims. No names, details or possible motives have been officially released.

UPDATE: 1:30 p.m. EDT — U.S. Rep. Joaquin Castro of Texas' 20th District released the following statement regarding an apparent murder-suicide at Lackland Air Force Base in San Antonio on Friday morning:

"I'm devastated that violence struck our community this morning. My prayers are with everyone at Lackland and all who have been affected by this tragedy. I'm grateful to our city's first responders who provided assistance today, and I offer my deepest gratitude to the brave men and women who serve in the Air Force and are stationed here at JBSA. My staff and I are in touch with the Department of Defense about this morning's incident as details continue to unfold."

UPDATE: 1:15 p.m. EDT — U.S. Rep. Will Hurd of Texas' 23rd District released the following statement regarding an apparent murder-suicide at Lackland Air Force Base in San Antonio on Friday morning:

"Many constituents in my district live near and work at Lackland Air Force Base, and this tragic shooting will have a profound impact on this tight-knit community. My prayers are with everyone impacted by this tragedy. I commend the first responders and base personnel for their bravery and professionalism."

UPDATE: 1:10 p.m. EDT — Brigadier Gen. Bob Labrutta told reporters two Glock pistols were recovered at the scene of an apparent murder-suicide at Lackland Air Force Base on Friday morning that left two people dead, including the shooter. It remains unclear if each of the men had a gun or if both were in the possession of one individual. Labrutta was unable to disclose the source of the weapons. Only security and law enforcement personnel are permitted to carry weapons on the base.

From press conference at Lackland: Shooting was murder-suicide, NOT terrorism. Two males are dead. 2 glock weapons were found at the scene.

UPDATE: 12:20 p.m. EDT — Military officials at Lackland Air Force Base told reporters at a press conference that the identity of two casualties in an apparent murder-suicide at the San Antonio base Friday morning could not be confirmed ahead of a "next-of-kin determination." The incident was described as a "one-off," by Brigadier Gen. Bob Labrutta and an FBI special agent on the scene said early indications are that it was not an act of terrorism. Normal operations at the base have resumed.

UPDATE: 12 p.m. EDT — The lockdown at Lackland Air Force Base in San Antonio has been lifted, according to multiple reports. The military base had locked down as police responded to an apparent murder-suicide Friday morning that left two people dead.

Two people were killed at Lackland Medina Annex. No indications this was a terrorist attack. Incident is contained. #lacklandshooting

UPDATE: 11:50 a.m. EDT — The U.S. Air Force Press Desk is refuting intial media reports about the unit details of two casualties in an apparent murder-suicide at Lackland Air Force Base in San Antonio on Friday morning. Early reports indicated the gunman was an airman who shot his commanding officer in the 331st K-9 Training Squadron.

UPDATE: 11:45 a.m. EDT — The shooter in an apparent murder-suicide at Lackland Air Force Base in San Antonio on Friday morning was an airman who shot his commanding officer, according to multiple reports. The victim was the commanding officer of the 331st K-9 Training Squadron, according to an internal Pentagon memo.

The shooter at Lackland AFB was an airman who shot his squadron commander, a Pentagon official told CNN.

UPDATE: 11:40 a.m. EDT — The commander of the 502nd Air Base Wing, in charge of Joint Base San Antonio, where an apparent murder-suicide occured Friday morning at Lackland Air Force Base, will hold a press conference at 11 a.m. local time, 12 p.m. EDT. One of the victims in the shooting has been reported to be the commanding officer of the 331st K-9 Training Squadron.

UPDATE: 11:25 a.m. EDT — One of the victims in an apparent murder-suicide at Lackland Air Force Base in San Antonio on Friday morning was the commanding officer of the 331st K-9 Training Squadron, according to multiple reports of an internal Pentagon memo. The shooter's identity has not yet been determined, and the base remains on lockdown.

UPDATE: 11:05 a.m. EDT —The Bexar County Sheriff's Office has confirmed that a shooting at Lackland Air Force Base in San Antonio on Friday morning was a murder-suicide. The base remains on lockdown, and deputees are still inside.

UPDATE: 11 a.m. EDT — Valley High Elementary School, blocks away from Lackland Air Force Base where police are responding to a possible murder-suicide, is also on lockdown, according to KSAT 12. The base went on lockdown after police responded to reports of an actice shooter at 8:45 a.m. local time.

UPDATE: 10:55 a.m. EDT — Multiple sources indicate that the gunman in a shooting at Lackland Air Force Base Friday morning was among the two reported casualties. Police responded to reports of an actice shooter at 8:45 a.m. local time.

Police are responding to reports of a possible murder-suicide at Lackland Air Force Base in San Antonio. According to News4 San Antonio, police were called at 8:45 a.m. local time, and officers from the San Antonio Police Department responded to reports of an active shooter.

The Bexar County Sheriff's Office has confirmed that there are victims and that the scene is still active. Multiple reports indicate that at least two people are dead. The base is on lockdown, and police are actively clearing the building.

Lackland Air Force Base is part of the Joint Base San Antonio and is the entry processing station for enlistees in the Air Force's Basic Military Training program. According to data from the U.S. Census Bureau, just under 10,000 people reside on the base, including almost 200 familes. A statement from the base confirmed a lockdown, including for all school and child development centers on the base: